Physics - Current Electricity Question with Solution | TestHub

A potentiometer circuit is set up as shown. The potential gradient across the potentiometer wire, is $\mathrm{k}$ volt/cm and the ammeter, present in the circuit, reads 1.0 A when two way key is switched off. The balance points, when the key between the terminals (i) 1 and 2 (ii) 1 and 3 , is plugged in, are found to be at lengths ${\mathrm{l}}_1\mathrm{cm}$ and ${\mathrm{l}}_2\mathrm{cm}$ respectively. The magnitudes, of the resistors $\mathrm{R}$ and $\mathrm{X}$, in ohm, are then, equal, respectively, to
NEET 2010 (Screening)